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34 lines
913 B
Markdown
34 lines
913 B
Markdown
---
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module: [kind=event] speaker_audio_empty
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see: speaker.playAudio To play audio using the speaker
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---
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<!--
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SPDX-FileCopyrightText: 2021 The CC: Tweaked Developers
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SPDX-License-Identifier: MPL-2.0
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-->
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## Return Values
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1. [`string`]: The event name.
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2. [`string`]: The name of the speaker which is available to play more audio.
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## Example
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This uses [`io.lines`] to read audio data in blocks of 16KiB from "example_song.dfpwm", and then attempts to play it
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using [`speaker.playAudio`]. If the speaker's buffer is full, it waits for an event and tries again.
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```lua {data-peripheral=speaker}
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local dfpwm = require("cc.audio.dfpwm")
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local speaker = peripheral.find("speaker")
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local decoder = dfpwm.make_decoder()
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for chunk in io.lines("data/example.dfpwm", 16 * 1024) do
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local buffer = decoder(chunk)
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while not speaker.playAudio(buffer) do
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os.pullEvent("speaker_audio_empty")
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end
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end
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```
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